CN111213198A

CN111213198A - Display with movable privacy door

Info

Publication number: CN111213198A
Application number: CN201780095834.7A
Authority: CN
Inventors: 吴冠霆; 陈威仲; 何辉
Original assignee: Hewlett Packard Development Co LP
Current assignee: Hewlett Packard Development Co LP
Priority date: 2017-10-13
Filing date: 2017-10-13
Publication date: 2020-05-29
Anticipated expiration: 2037-10-13
Also published as: JP7037646B2; EP3665671A1; US11238780B2; JP2021500597A; US20200241284A1; EP3665671A4; WO2019074513A1; CN111213198B

Abstract

In one example, a display is described, which may include: a plurality of spaced apart light emitting device packages; a privacy door having a partition wall partitioning each of the plurality of partitioned light emitting device packages; and a control unit for selectively moving the partition wall upward or downward with respect to the plurality of spaced light emitting device packages to control a viewing angle of the display.

Description

Display with movable privacy door

Background

The advent and popularity of mobile computing has made electronic devices a major product in today's market due to their compact design and light weight. Electronic devices such as mobile phones, laptops, and tablets may include displays for outputting information to a user. Example displays may include micro-light emitting diode (micro-LED or μ LED) displays. Micro-LED displays may have Micro-LEDs used to form individual pixel elements. The user may view private information, such as private financial information or confidential mail, using the display. Due to the increased portability of electronic devices, users may transport and use electronic devices in public areas with minimal privacy.

Drawings

Examples are described in the following detailed description and with reference to the accompanying drawings, in which:

FIG. 1A is a perspective view of an example display depicting a privacy door;

FIG. 1B is a perspective view of the example display of FIG. 1A depicting upward movement of the privacy door to control the viewing angle of the display;

fig. 1C and 1D are example schematic diagrams illustrating a wide viewing angle and a narrow viewing angle, respectively, of a display corresponding to fig. 1A and 1B;

FIG. 2A is a schematic diagram of an example electronic device depicting a privacy gate controlling a perspective of a display of the electronic device;

FIG. 2B is a schematic diagram of the example electronic device of FIG. 2A depicting additional components of the display;

fig. 3A and 3B depict example schematic diagrams of a privacy gate including multiple columns of partition walls that may be moved up or down to provide two-way privacy control;

FIG. 3C is an example schematic diagram depicting a display of a two-way privacy control;

fig. 4A and 4B depict example schematic diagrams of a privacy gate including multiple intersecting rows and columns of partition walls that may be moved up or down to provide four-way privacy control;

FIG. 4C is an example schematic diagram of a display depicting a four-way privacy control; and is

FIG. 5 is a block diagram depicting an example electronic device implementing a privacy mode of a display upon detection of activation of the privacy mode.

Detailed Description

Electronic devices such as mobile phones, laptops, and tablets may include displays that output information to a user. The user may view private information, such as private financial information or confidential mail, using the display. Typically, the user may be in a public place, such as when the user is sitting in a guest room, queuing, or riding in a public transportation vehicle. In this case, others may see the display of the user's electronic device, especially when the user's electronic device includes a display that can be viewed from various angles. In some cases, a detachable privacy screen may be used at the display device to limit the propagation direction of light emitted from the display device. In such a case, the use of the privacy screen may inhibit or reduce the functionality of the touch screen associated with the display device.

Examples described herein may provide a display including a plurality of spaced apart light emitting device packages (light emitting device packages). Example displays may include micro light emitting diode (micro-LED) displays, Micro Electro Mechanical System (MEMS) displays, and the like. Micro-LED displays (also known as m-LEDs or μ -LEDs) are an emerging flat panel display technology with an array of Micro-LEDs forming individual pixel elements. Each of the light emitting device packages may include at least one micro-LED. Further, the display may include a privacy door having a partition wall that partitions each of the plurality of partitioned light emitting device packages. Further, the display may include a control unit for selectively moving the partition wall upward or downward with respect to the plurality of spaced light emitting device packages to control a viewing angle of the display.

Examples described herein may provide switchable privacy controls for a display to control the viewing angle and protect the display from peeking. In this case, when the user selects the privacy mode, the privacy door (e.g., ultra-thin privacy door) may be moved up or down to change the light direction. Thus, sensitive data and information such as insurance, banking, finance, human resources, commerce, examination rooms, medical personnel, and security applications may be protected from peeking.

Examples described herein may provide two-way or four-way privacy control (i.e., horizontal perspective control and/or vertical perspective control). Examples described herein may also provide multiple mode privacy controls. For example, the degree of privacy on the display may be controlled by moving an ultra-thin privacy door relative to the light emitting device package to a plurality of positions corresponding to a plurality of privacy modes.

Fig. 1A is a perspective view of an example display 100 depicting a privacy door 104. Display 100 may be an external display of a computing device, an internal display of a computing device, or any combination thereof. An example display may include a touch screen display. In one example, the display 100 may include a plurality of spaced apart light emitting device packages 102, for example, integrated into a circuit board of the display 100. In one example, the spaced light emitting device packages 102 may be arranged in columns and rows. In another example, the light emitting device packages 102 may be uniformly arranged.

For example, display 100 may refer to a display device that outputs data via an array of pixel elements. In this case, the light emitting device package 102 may include at least one semiconductor device that generates light when an appropriate electrical bias is provided. For example, each light emitting device package 102 may include at least one μ LED pixel that can be driven to emit light. A pixel may refer to a component of display 100 that can be used to construct an image. For example, each μ LED may include a red pixel, a green pixel, a blue pixel, or any combination thereof, which may be independently controlled to produce a range of colors.

The example display 100 may include a privacy door 104, the privacy door 104 having partition walls 106 that partition each of the partitioned light emitting device packages 102. The example privacy door 104 may be an ultra-thin privacy door. In one example, the privacy door 104 may be disposed on the light emitting device packages 102 such that light may be emitted through the partition wall 106. The example display 100 may include a control unit 108 for selectively moving the partition wall 106 up or down relative to the light emitting device packages 102 to control the viewing angle of the display 100.

Fig. 1B is a perspective view of the example display 100 of fig. 1A depicting upward movement of the privacy door 104 to control the viewing angle of the display 100. As shown in fig. 1B, the privacy door 104 may be a grid-like structure having a plurality of columns of partition walls 106 arranged to partition the plurality of spaced light emitting device packages 102 by the support frame 110. Each light emitting device package 102 may be accommodated in a respective space defined between columns of the partition walls 106. In one example, the control unit 108 may move the partition wall 106 up or down relative to the support frame 110 to provide two-way privacy control of the viewing angle of the display 100. In one example, the two-way privacy control may include a horizontal viewing angle control of the display 100.

Fig. 1C illustrates an example schematic diagram 100C of a wide viewing angle of the display 100 when the display 100 is operating in a normal mode. In fig. 1C, the privacy door 104 is in a first position (e.g., has a height h1) relative to the support frame 110. Fig. 1D is an example schematic diagram 100D illustrating a narrow viewing angle of the display 100 when the display 100 is operating in the privacy mode.

As shown in fig. 1D, the privacy door 104 may be moved upward relative to the support frame 110 to a second position (e.g., having a height h2, h2> h1) to change the light direction of the μ -LED pixels and narrow the viewing angle of the display 100. In this example, the partition walls 106 may block a portion of the light from the light emitting device packages 102 to narrow the viewing angle of the display 100.

The privacy mode may be explicitly activated by the user or may be activated in response to a privacy mode activation event. In one example, a touch screen may be used to detect gestures that activate and/or deactivate the privacy mode. In another example, the privacy mode may be activated and/or deactivated via a keyboard and/or keypad. In yet another example, a microphone in the display 100 may be used to detect a voice command that activates the privacy mode. In yet another example, the privacy mode or the normal mode may be manually selected by a user. In yet another example, the privacy mode or the normal mode may be automatically detected by at least one sensor disposed in the display 100 based on a user gesture. An example sensor may include a camera.

Thus, the privacy door 104 may be moved up or down relative to the support frame 110 to switch the viewing angle between a wide viewing angle and a narrow viewing angle. The wide viewing angle may refer to a maximum angle at which information/content displayed on the display 100 may be viewed. The wide viewing angle may be greater than the narrow viewing angle. During operation in the privacy mode, the viewing angle (e.g., the range of viewing sensitive information on the display 100) may need to be limited to prevent other users from viewing the display 100. In this case, the viewing angle of the display 100 may be switched to a narrow viewing angle to enable privacy of the information/content displayed on the display 100. During normal mode operation, the viewing angle of the display 100 may be switched to a wide viewing angle.

Fig. 2A is a schematic diagram of an example electronic device 200 depicting a privacy gate 208 controlling a viewing angle of a display 202 of the electronic device 200. Example electronic devices 200 may include mobile communication devices such as smart phones, laptops, tablets, conversion devices usable in both laptop and tablet modes, media playback devices, portable gaming systems, and/or any type of portable computer device having a screen that displays visual data. Example displays 202 may include Liquid Crystal Displays (LCDs), Light Emitting Diode (LED) displays, μ -LED displays, MEMS displays, or other displays that include an array of LED packages (e.g., LEDs). Micro-LEDs (μ -LEDs) can be considered as one type of LED. The electronic apparatus 200 may be equipped with other components such as a camera, an audio/video apparatus, and the like depending on the functions of the electronic apparatus 200.

The example electronic device 200 may include a display 202 and a control unit 212 communicatively connected to the display 202. In one example, the control unit 212 may be implemented as part of the display 202, for example, in the case of a tablet computer. In another example, the control unit 212 may be implemented as part of a base of the electronic device 200 (e.g., that houses a battery, a touchpad, a keyboard, etc.) and communicatively connected to the display 202, for example, in the case of a laptop computer.

The display 202 may include a back plate 204 equipped with an array of spaced apart LED packages 206. For example, each LED package 206 may include a red μ -LED, a green μ -LED, a blue μ -LED, or any combination thereof. Further, the display 202 may include a privacy door 208, the privacy door 208 having partition walls that partition each of the arrays of spaced LED packages. In one example, the privacy gate 208 may be a grid-like structure formed by a plurality of intersecting rows and columns of partition walls. Each LED package 206 may be housed in a respective space defined by intersecting rows and columns of partition walls.

In addition, the display 202 may include an optical film 210 disposed over the privacy door 208 such that the privacy door 208 may move up or down between the optical film 210 and the back plate 204. In some examples, the optical film 210, the back plate 204, and the privacy door 208 are parallel to one another. Example optical films 210 may include asymmetric turning films, asymmetric prismatic films, Brightness Enhancement Films (BEFs), Dual Brightness Enhancement Films (DBEFs), diffusers, polarizing films, retardation films, or any combination thereof. As shown in fig. 2B, display 202 may include a substrate 214 disposed on optical film 210. Example substrate 214 may be a glass substrate or a plastic substrate. In some examples, the display 202 may include a touch screen including a display and an input device configured to detect a user's touch. In addition, an optical film 210 may be placed on the example substrate 214.

During operation, the control unit 212 may selectively move the partition walls up or down relative to the spaced LED packages 206 to control the viewing angle of the display 202. In one example, the control unit 212 may control the degree of privacy on the display 202 by moving the privacy gate 208 to a plurality of positions corresponding to a plurality of privacy modes. Each privacy mode may have a different perspective than the other privacy modes.

In one example, the control unit 212 may move the partition walls corresponding to the columns up or down with respect to the spaced LED packages 206 to control the horizontal viewing angle of the display 202. This is explained in fig. 3A. In another example, the control unit 212 may move the partition walls corresponding to the rows up or down relative to the array of spaced LED packages 206 to control the vertical viewing angle of the display 202. In yet another example, the control unit 212 may move partition walls corresponding to rows and columns up or down relative to the array of spaced LED packages 206 to control the horizontal and vertical viewing angles of the display 202.

Fig. 3A and 3B depict example schematic diagrams of a privacy gate 208 that includes multiple columns 304 of partition walls that may be moved up or down to provide two-way privacy control. In particular, fig. 3A and 3B illustrate a top view 300A and a front view 300B of the privacy door 208. As shown in fig. 3A, the privacy door 208 may be a grid-like structure having columns 304 of partition walls arranged to partition the LED packages 206 by a support frame 302. Each LED package may be housed in a respective space defined between columns 304 of partition walls.

As shown in the example front view 300B of fig. 3A, when the display 202 is operating in a normal mode (i.e., when the privacy mode is deactivated), the columns 304 of partition walls are arranged within the support frame 302. As shown in the front view 300B of fig. 3B, when the privacy mode of the display 202 is activated, the control unit 212 may move the columns 304 of partition walls upward relative to the support frame 302 to provide two-way privacy control of the viewing angle of the display 202. Fig. 3C is an example schematic diagram depicting a display 202 corresponding to the two-way privacy control of fig. 3B. In one example, fig. 3C depicts right view privacy controls and left view privacy controls of display 202 corresponding to the privacy mode of fig. 3B.

Fig. 4A and 4B depict example schematic diagrams of a privacy gate 208 that includes multiple intersecting rows 406 and columns 404 of partition walls that may be moved up or down to provide four-way privacy control. In particular, fig. 4A and 4B illustrate a top view 400A, a cross-sectional front view 400B, and a cross-sectional side view 400C of the privacy door 208. As shown in fig. 4A, the privacy door 208 may be a grid-like structure including a plurality of intersecting rows 406 and columns 404 of partition walls arranged to partition the LED packages 206 by a support frame 402. Each LED package 206 may be housed in a respective space defined by intersecting rows 406 and columns 404 of partition walls.

As shown in the example front view 400B and side view 400C of fig. 4A, when the display 202 is operating in a normal mode (i.e., when the privacy mode is deactivated), the rows 406 and columns 404 of partition walls are arranged within the support frame 402. As shown in the front view 400B and the side view 400C of fig. 4B, when the privacy mode of the display 202 is activated, the control unit 212 may move the rows 406 and columns 404 of partition walls upward relative to the support frame 402 to provide four-way privacy control of the viewing angle of the display 202.

Fig. 4C depicts an example schematic diagram of a display 202 corresponding to the four-way privacy control of fig. 4B. In one example, fig. 4C depicts right view, left view, top view, and bottom view privacy controls of the display 202 corresponding to the privacy mode of fig. 4B. Example four-way privacy controls may include a horizontal perspective control (i.e., a right view privacy control and a left view privacy control) and a vertical perspective control (i.e., an overhead view privacy control and an overhead view privacy control).

In other examples, control unit 212 may move partition walls corresponding to columns 404 or rows 406 up or down relative to support frame 402 to provide horizontal or vertical viewing angle control of display 202, respectively.

The

control units

108 and 212 may comprise, for example, hardware devices including electronic circuitry capable of implementing the functions described herein. Additionally or alternatively, the

control units

108 and 212 may be implemented as a series of instructions encoded on a machine-readable storage medium of the devices (e.g., 100 and 200) and executable by a processor. In examples described herein, a processor may include, for example, one processor or multiple processors included in a single device or distributed across multiple devices. It should be noted that in some examples, some modules are implemented as hardware devices while other modules are implemented as executable instructions.

FIG. 5 is a block diagram depicting an electronic device 500 implementing a privacy mode of a display upon detection of activation of the privacy mode. The electronic device 500 may include a processor 502 and a machine-readable storage medium 504 communicatively coupled via a system bus. Processor 502 may be any type of Central Processing Unit (CPU), microprocessor, or processing logic that interprets and executes machine-readable instructions stored in a machine-readable storage medium 504. The machine-readable storage medium 504 may be a Random Access Memory (RAM) or another type of dynamic storage device that may store information and machine-readable instructions that are executable by the processor 502. For example, the machine-readable storage medium 504 may be Synchronous DRAM (SDRAM), Double Data Rate (DDR), high frequency DRAM (RDRAM), high frequency RAM, etc., or a storage memory medium such as a floppy disk, hard disk, CD-ROM, DVD, pen drive, etc. In an example, the machine-readable storage medium 504 may be a non-transitory machine-readable storage medium. In an example, the machine-readable storage medium 504 may be remote but accessible to the electronic device 500.

Machine-readable storage medium 504 may store

instructions

506 and 508. In an example, when the privacy mode is activated or deactivated, the

instructions

506 and 508 may be executed by the processor 502 to control the viewing angle of the display. The instructions 506 may be executable by the processor 502 to detect activation of a privacy mode of a display. In one example, a display may include an array of Light Emitting Diode (LED) packages and a privacy door having partition walls that partition each of the LED packages. For example, the display may comprise a plurality of μ -LEDs. For example, the privacy door may be disposed between the backplane with integrated LED packages and the prism layer of the display. The partition wall may provide a first viewing angle of the display when the display is operating in a normal mode.

The instructions 508 may be executable by the processor 502 to move the partition wall upward to change a light direction of the LED package to provide a second viewing angle of the display in response to detecting activation of the privacy mode. The second viewing angle may be narrower than the first viewing angle. In other examples, the machine-readable storage medium 504 may include instructions to receive an input to enable the second privacy mode of the display and to move the privacy door upward to change the light direction of the LED package to provide a third viewing angle of the display. In this example, the third viewing angle is narrower than the second viewing angle.

In another example, the privacy door may include partition walls arranged in rows and columns to partition each of the LED packages. In this example, the instructions 506 may be executable by the processor 502 to:

a. moving the partition walls corresponding to the rows upward to control the vertical viewing angle of the display;

b. moving the partition walls corresponding to the columns upward to control the horizontal viewing angle of the display; or

c. The partition walls corresponding to the rows and columns are moved upward to control the horizontal and vertical viewing angles of the display.

It may be noted that the present solution is illustrated for illustrative purposes only. Although a solution has been described in connection with a particular implementation thereof, several modifications are possible without materially departing from the teachings and advantages of the subject matter described herein. Other substitutions, modifications and changes may be made without departing from the spirit of the present solution. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.

As used herein, the terms "comprising," "having," and variations thereof have the same meaning as the terms "comprising" or appropriate variations thereof. Further, as used herein, the term "based on" means "based at least in part on. Thus, features described as being based on certain stimuli may be based on the stimuli or a combination of stimuli including the stimuli.

The present specification has been shown and described with reference to the foregoing examples. It is to be understood, however, that other forms, details, and examples may be made without departing from the spirit and scope of the present subject matter as defined in the appended claims.

Claims

1. A display, comprising:

a plurality of spaced apart light emitting device packages;

a privacy door having a partition wall that partitions each of the plurality of partitioned light emitting device packages; and

a control unit for selectively moving the partition wall upward or downward with respect to the plurality of spaced light emitting device packages to control a viewing angle of the display.

2. The display of claim 1, wherein the plurality of spaced light emitting device packages are arranged in rows and columns, and wherein each light emitting device package comprises at least one micro light emitting diode (μ LED) pixel.

3. The display of claim 1, wherein the privacy door is a grid-like structure comprising a plurality of columns of the partition wall arranged by a support frame to partition the plurality of spaced light emitting device packages, and wherein each light emitting device package is housed in a respective space defined between the columns of the partition wall.

4. A display as claimed in claim 3, in which the control unit is arranged to move the columns of partition walls upwardly or downwardly relative to the support frame to provide two-way privacy control of the viewing angle of the display.

5. The display of claim 1, wherein the privacy door is a grid-like structure comprising a plurality of intersecting rows and columns of the partition wall arranged by a support frame to partition the plurality of spaced light emitting device packages, wherein each light emitting device package is housed in a respective space defined by the intersecting rows and columns of the partition wall.

6. The display of claim 5, wherein the control unit is to move the partition walls corresponding to the rows or columns up or down relative to the support frame to provide two-way privacy control of the viewing angle of the display, and wherein the two-way privacy control includes one of a horizontal viewing angle control and a vertical viewing angle control.

7. The display of claim 5, wherein the control unit is to move the partition walls corresponding to the rows and columns up or down relative to the support frame to provide four-way privacy control of the viewing angle of the display, wherein the four-way privacy control includes horizontal viewing angle control and vertical viewing angle control.

8. An electronic device, comprising:

a display, the display comprising:

a backplane having a plurality of spaced Light Emitting Diode (LED) packages;

a privacy door having a partition wall separating each of the plurality of spaced apart LED packages, wherein the privacy door is a grid-like structure formed by a plurality of intersecting rows and columns of the partition wall, and wherein each LED package is housed in a respective space defined by the intersecting rows and columns of the partition wall; and

an optical film disposed over the privacy door; and

a control unit for selectively moving the partition wall upward or downward with respect to the plurality of spaced LED packages to control a viewing angle of the display.

9. The electronic device of claim 8, comprising a substrate disposed on the optical film, wherein the substrate is a glass substrate or a plastic substrate.

10. The electronic device of claim 8, wherein the control unit is to:

moving the partition walls corresponding to the rows up or down relative to the plurality of spaced apart LED packages to control a vertical viewing angle of the display;

moving the partition walls corresponding to the columns up or down relative to the plurality of spaced apart LED packages to control a horizontal viewing angle of the display; or

Moving the partition walls corresponding to the rows and columns up or down relative to the plurality of spaced apart LED packages to control the horizontal viewing angle and the vertical viewing angle of the display.

11. The electronic device of claim 8, wherein the optical film comprises an asymmetric turning film, an asymmetric prism film, a Brightness Enhancement Film (BEF), a Dual Brightness Enhancement Film (DBEF), a diffuser, a polarizing film, a retardation film, or any combination thereof.

12. The electronic device of claim 8, wherein the control unit is to control the degree of privacy on the display by moving the privacy door to a plurality of positions corresponding to a plurality of privacy modes, and wherein each privacy mode has a different perspective than the other privacy modes.

13. A non-transitory computer-readable storage medium comprising instructions that, when executed by a processor of a computing device, cause the processor to:

detecting activation of a privacy mode of a display, the display comprising an array of Light Emitting Diode (LED) packages and a privacy door having a partition wall separating each of the LED packages, wherein the partition wall is to provide a first viewing angle of the display in a normal mode; and

moving the partition wall upward to change a light direction of the LED packages to provide a second viewing angle of the display in response to detecting the activation of the privacy mode, wherein the second viewing angle is narrower than the first viewing angle.

14. The non-transitory computer readable storage medium of claim 13, comprising instructions to:

receiving an input to enable a second privacy mode of the display; and

moving the privacy door upward to change the light direction of the LED package to provide a third viewing angle of the display, wherein the third viewing angle is narrower than the second viewing angle.

15. The non-transitory computer-readable storage medium of claim 13, wherein the privacy door comprises a partition wall arranged in rows and columns to partition each of the LED packages, wherein moving the partition wall upward comprises one of:

moving the partition walls corresponding to the columns upward to control a horizontal viewing angle of the display;

moving the partition walls corresponding to the rows upward to control a vertical viewing angle of the display; and

moving the partition walls corresponding to the rows and columns upward to control the horizontal viewing angle and the vertical viewing angle of the display.